So after a lot of wiring and circuit trouble shooting the guitar is now fully functional however, there is no sound coming out from the sound board attached to the XYZ movement sensor attached to the original board of the ‘AirFX’.
After many hours myself and G.Mennie (of Kinellar Guitars) have checked and tried every connection. Despite the power adapter lighting up the display on the FX board there is no sound. Also, when checking with the multimeter we are not getting a reading. We suspect this (now that we have tried a common earth as a last attempt and that didn’t work) is the main issue and we hope to have it troubleshot today and ready for peer reviews tonight.